21078508

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{2939}}^1$

素因数の和:3117

約数の個数: 24

約数和(自身を含む): 40501440

約数和(自身を除く): 19422932

約数列:

[1, 2, 4, 11, 22, 44, 163, 326, 652, 1793, 2939, 3586, 5878, 7172, 11756, 32329, 64658, 129316, 479057, 958114, 1916228, 5269627, 10539254, 21078508]

約数ペア:

[(1, 21078508), (2, 10539254), (4, 5269627), (11, 1916228), (22, 958114), (44, 479057), (163, 129316), (326, 64658), (652, 32329), (1793, 11756), (2939, 7172), (3586, 5878)]